Maarten Lankhorst : dsound: Make AngleBetweenVectorsRad when vectors have no magnitude.
Alexandre Julliard
julliard at winehq.org
Mon Nov 12 06:25:42 CST 2007
Module: wine
Branch: master
Commit: 3f965d582fbcc7f6e596a61541b93a1286501706
URL: http://source.winehq.org/git/wine.git/?a=commit;h=3f965d582fbcc7f6e596a61541b93a1286501706
Author: Maarten Lankhorst <maarten at codeweavers.com>
Date: Fri Nov 9 20:13:01 2007 +0100
dsound: Make AngleBetweenVectorsRad when vectors have no magnitude.
---
dlls/dsound/sound3d.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/dlls/dsound/sound3d.c b/dlls/dsound/sound3d.c
index db4390f..2397f52 100644
--- a/dlls/dsound/sound3d.c
+++ b/dlls/dsound/sound3d.c
@@ -110,6 +110,9 @@ static inline D3DVALUE AngleBetweenVectorsRad (const D3DVECTOR *a, const D3DVECT
product = ScalarProduct (a,b);
la = VectorMagnitude (a);
lb = VectorMagnitude (b);
+ if (!la || !lb)
+ return 0;
+
cos = product/(la*lb);
angle = acos(cos);
TRACE("angle between (%f,%f,%f) and (%f,%f,%f) = %f radians (%f degrees)\n", a->x, a->y, a->z, b->x,
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